I have a similar issue. For some images linked into my .ai file, they are placed in at 100% scale, however in the Links module, they are registering at 36% (or something close to 36%). It's not all images doing that. In fact, I'll open the same file in Illustrator 2024, and it will register 100% scale in the Links module. This is a bug in AI 2025. Please fix!!
Illustrator (2025) v29.3.1
I have a similar issue. For some images linked into my .ai file, they are placed in at 100% scale, however in the Links module, they are registering at 36% (or something close to 36%). It's not all images doing that. In fact, I'll open the same file in Illustrator 2024, and it will register 100% scale in the Links module. This is a bug in AI 2025. Please fix!!